Stainless steel pneumatic stop valve - Shanghai Dongfeng Pump Valve Factory - 上海花千坊_上海龙凤花坛_夜上海最新论坛

Stainless steel pneumatic stop valve

  • [Valve model]: J641W，J641H，J641Y
  • [Diameter specification]: DN50～DN300
  • [Structure]: Straight through
  • [Valve body material]: Cast steel, stainless steel, chrome molybdenum steel, chrome molybdenum vanadium steel
  • [Nominal pressure]: PN16-PN160
  • [Applicable temperature]: -29℃-550℃
  • [Application Scope]: Environmental protection, petroleum, chemical industry, power industry, etc
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  • Stainless steel pneumatic stop valve

Product features

The stainless steel pneumatic stop valve (J641W-16P) is characterized by short opening and closing travel, fast speed, reliable sealing, static opening and closing, mainly composed of flange stainless steel stop valve, pneumatic actuator and other air source accessories. It is an automatic control system that relies on air source to open and close the valve. With compressed air, remote and centralized control can be realized. The pneumatic stop valve can be opened and closed quickly, Therefore, it is usually used in occasions with high application frequency and fast switching time, or in special working conditions that are not suitable for manual control, especially in process pipelines where there is no power source.
Stainless steel pneumatic stop valve structure
Structural Drawing of Stainless Steel Pneumatic Stop Valve
Advantages of stainless steel pneumatic stop valve:
 
1. Convenient and flexible operation, simple structure, convenient manufacturing and maintenance;
2. Small working stroke and short opening and closing time; The sealing surface between the closing body (valve disc) and the valve seat is sealed with a conical surface, with small closing force, erosion resistance and reliable sealing.
3. The valve seat can be a replaceable valve seat, which can be matched with the sealing surface material of the closing element in any combination to meet the working condition requirements and extend the service life.

technical parameter

Nominal diameter DN50～DN300
Nominal pressure 2.5 4.0 6.4 16.0（Mpa）
Connection mode Flange type
control mode Pneumatic control (gas supply 0.4-0.7Mpa)
body material Cast steel, stainless steel, chrome molybdenum steel, chrome molybdenum vanadium steel
filler Reinforced flexible graphite
temperature range -29℃-550℃

Principle of stainless steel pneumatic stop valve:
 
The cylinders of the pneumatic control device of the pneumatic stop valve can be divided into single action and double action according to the action mode. Single acting cylindrical spring with reset, with automatic reset function after air loss. That is, under the action of the spring, the cylinder piston (or diaphragm) drives the cylinder push rod to return to the initial position of the cylinder (the original position of the stroke) when air is lost. The double acting cylinder has no return spring, and the push rod must be moved forward or backward by changing the inlet and outlet positions of the air source of the cylinder. When the air source enters from the upper chamber of the piston, the push rod moves downward. When the air source enters from the lower chamber of the piston, the push rod moves upward.  

Quotation process

Valve price:

Due to the different requirements of order quantity, packaging and delivery method, and the fluctuation of the price of valve raw materials, the price of valves will have a big difference immediately, so our products have not been marked with prices on the website, please understand.

If you select a valve product on this website and need to know the price or obtain relevant technical information, please contact us. We will reply immediately, and can select appropriate valve products for you according to your requirements, so that your procurement process is easy and pleasant.

Quotation process:

1. Please fax the name (or product model) of the valve you selected, the required order quantity, packaging requirements, delivery time, your company name, your company location and contact information to 021-36311208 Or telephone: 021-60547555。

2. After receiving the customer's purchase list, our company will provide the customer with various services such as valve quotation "price list", model selection "valve model" and technical guidance as soon as possible.

3. Specific matters: delivery date, special requirements, etc.

Ordering Instructions

1、 If the customer has special requirements for the product, the following instructions must be provided in the order contract:
(1) Valve body material (such as plastic, cast steel, stainless steel...)
(2) Connection type (such as flange, thread, clamp, etc.)
(3) Nominal diameter, pipe size
(4) Ambient temperature and pressure range
(5) Power supply voltage, air supply pressure
(6) Fluid properties (including nominal pressure, temperature, viscosity or acid-base)
2、 The company configures various driving devices according to the special requirements of customers. (electric control, pneumatic control)
3、 If the customer provides the determined valve type and model, the customer should correctly explain the meaning and requirements of the model (see the description of valve model preparation for details), and sign the contract on the condition that both the supplier and the buyer have the same understanding.
4、 After the customer tells the required valve model, specification, quantity, delivery time and place, the deposit of 20% of the total amount or the full payment for goods shall be remitted to our company's account in time, and the rest of the payment for goods shall be remitted before shipment, so as to arrange shipment in time.
5、 After the purchase is confirmed, our company will produce in strict accordance with the delivery date. The product processing cycle is generally 3 to 30 days, depending on the type and quantity of the order, and the specific delivery time is subject to the contract. In order to ensure that the goods you ordered are in place in time, please try your best to order earlier.
6、 Our company provides network distribution services according to the needs of customers, delivering goods to the branches (offices) of customers in major cities, and implementing door-to-door delivery services. After the products are accepted, our company will provide after-sales service.